major nadal hassan accused of offing fire and killing 13 people and injuring several others pmp. others. >> reporter: the fbi made a 7-minute video, walking through the crime scene. it was not long after the crime happened. a large flat screen television hangs on the wall inside the courtroom and yesterday it was turned off when that video was shown to protect the family members sitting in the courtroom. only smaller screens on the journal's bench and the monitor on hassan's defense table. 146 total shell casings were recovered. six magazines. 270 bullet holes, according to the fbi processing team. today's focus is going to be on autopsies. six forensic pathologists ready to take the stand. they will be going through the injuries and the evidence recovered from the 13 people who died in this attack. they were flown to dover tear force base where the military mortuary services are. dover is the spot where any troop that is killed in the line of duty on the battle feed at home, it will be a tough day in that courtroom. again all of the autopsy photos not shown on that big screen tv